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sean evans

sean e.

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x^3-3x-2 a) list all potential zero's b) use the factor theorem to determine the full factorization of the given polynomial ( you must use synthetic division) c) list all zero's of the given polynomial

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A gasoline tank for a certain car is designed to hold 15.5 gal of gas. Suppose that the variable x is actual capacity of a randomly selected tank has a distribution that is well approximated by a normal curve with mean 15.5 gal and standard deviation 0.15 gal. What is the probability that a randomly selected tank will hold between 15.36 and 15.61 gal?

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Problem 1 Consider an airplane flying at an altitude where the pressure and temperature are 561.44 lb/ft² and 390° R, respectively. Calculate the pressure and density altitudes at which the airplane is flying

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Irreversible investments can be costly because they: Select one: a. involve a large number of workers. b. are expensive. c. involve sunk costs. d. are intertemporal.

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Find the value of $b$ such that the system of equations $bx - 10y = -6$ $-9x - 15y = 14$

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2. A horizontal force P is exerted on a 20-kg box to slide it up a 30° incline. Assume that the friction force opposing the motion is 80 N. (Use your knowledge of Newton’s Laws to solve this problem, and don’t forget to break vectors into components when relevant) A. Break the force due to gravity into components. (4 pts) B. Calculate Px the component of the push in the x direction by writing an equation for Newton’s second law. Assume that the acceleration is 0 m/s^2. (3 pts) C. Using your knowledge of right triangles calculate the force P.

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People who need blood transfusions after an injury are blood-typed before being transfused. Both recipients and donors are tested to ensure that their blood is compatible. This is particularly crucial for the recipient. Why? Be specific with your answers. (e.g., antigens and antibodies)

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of \mathbb{R}^3: (a) Find the coordinate vector of $x = \begin{bmatrix} -1 \ -3 \ 5 \end{bmatrix}$ with respect to the ordered basis $E = \left\{ \begin{bmatrix} 1 \ 6 \ 7 \end{bmatrix}, \begin{bmatrix} 0 \ 1 \ -2 \end{bmatrix}, \begin{bmatrix} 0 \ 0 \ 1 \end{bmatrix} \right\}$ $[x]_E = \begin{bmatrix} \\\\\\ \end{bmatrix}$ (b) Let $F_1$ be the ordered basis of $\mathbb{R}^2$ given by $F_1 = \left\{ \begin{bmatrix} 4 \ -2 \end{bmatrix}, \begin{bmatrix} 1 \ 5 \end{bmatrix} \right\}$ and let $F_2$ be the ordered basis given by $F_2 = \left\{ \begin{bmatrix} 2 \ 1 \end{bmatrix}, \begin{bmatrix} 3 \ 2 \end{bmatrix} \right\}$ Find the transition matrix $P_{F_2 \leftarrow F_1}$ such that $[x]_{F_2} = P_{F_2 \leftarrow F_1} [x]_{F_1}$ for all $x$ in $\mathbb{R}^2$: $P = \begin{bmatrix} \\\\\\ \end{bmatrix}$

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Suppose there is some hypothetical closed economy in which households spend $0.80 of each additional dollar they earn and save the remaining $0.20. The marginal propensity to consume (MPC) for this economy is , and the spending multiplier for this economy is Suppose the government in this economy decides to decrease government purchases by $300 billion. The decrease in government spending will lead to a decrease in income, creating an initial change in consumption equal to . This decreases income yet again, leading to a second change in consumption equal to . The total change in demand resulting from the initial change in government spending is The following graph shows the aggregate demand curve ($AD_1$) for this economy before the change in government spending. Use the green line (triangle symbol) to plot the new aggregate demand curve ($AD_2$) after the multiplier effect takes place. For simplicity, assume that there is no \"crowding out.\" Hint: Be sure that the new aggregate demand curve ($AD_2$) is parallel to the initial aggregate demand curve ($AD_1$). You can see the slope of $AD_1$ by selecting it on the graph.

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Determine the force in each member of the loaded truss. Explain why knowledge of the lengths of the members is unnecessary. 3330 lb B A 25° 65°C Answers: AB = Ib AC = Ib BC = Ib

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